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Complete your Polk home theater system with the CSi A4 center channel speaker. Its advanced driver technology and solid construction work together to deliver clear, distinct movie dialogue and exciting special effects. Polk carefully designed the woofers and tweeter using laser testing to help identify and eliminate resonance points. The acoustically inert MDF cabinet fights internal vibrations that can compromise performance. It all adds up to smooth, accurate sound with DVDs and multichannel music sources. And a real wood veneer finish gives this speaker a warm, refined look, making it an attractive addition to just about any room.

Crisp dialogue from a solidly built center channel

Complete your Polk home theater system with the CSi A4 center channel speaker. Its advanced driver technology and solid construction work together to deliver clear, distinct movie dialogue and exciting special effects. Polk carefully designed the woofers and tweeter using laser testing to help identify and eliminate resonance points. The acoustically inert MDF cabinet fights internal vibrations that can compromise performance. It all adds up to smooth, accurate sound with DVDs and multichannel music sources. And a real wood veneer finish gives this speaker a warm, refined look, making it an attractive addition to just about any room.

Product Research

Driver Technology

Dynamic Balance: Dynamic Balance is a proprietary Polk Audio technology using laser imaging to
determine what combination of speaker materials create the least amount of
resonance. Eliminating resonance in speakers results in a wide, smooth response
and low distortion.

Polymer Composite Woofers: The
speaker features two 5-1/4" polymer composite woofers for smooth wide-range response
with low distortion. For high performance durability, each woofer uses a butyl
rubber surround and an acoustically inert stamped driver basket.

Silk/Polymer Tweeter: The
speaker has a 1" silk/polymer dome tweeter that provides clear, detailed
highs. The tweeter uses a heat sink on the Neodymium magnet for superior heat
dissipation, power handling and reliability.

Frequency Response Note: The
overall frequency response is 55Hz-27kHz and the -3dB frequency response is
65-25kHz.

Connections

Mounting Options

Reversible Design: If the
speaker must be positioned below ear level, you can turn the cabinet upside
down, allowing the drivers to fire upward.

Magnetically
Shielded: The speaker
is magnetically shielded, allowing you to place it on your television without
distorting the picture.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Accessories

Q & A

Customer Q&A

Crutchfield askedWhy did you buy this?

Just wanted to add a center channel to my existing 2.1 system. Lori suggested this would be good match for mine.
[ Tirumalaimuttu Nov 06, 2018 ]

Just the right size for the space it needs to sit in, I like how Polk speakers sound, frequency response is very good for the size, and it pairs well with other very good speakers.
[ Nicklas Feb 02, 2018 ]

I have another Polk speaker that I'm happy with and I enjoy dealing with crutchfield. Free shipping is also a plus
[ FRANK Jan 29, 2018 ]

I picked this model over the CsiA6 because the high customer ratings and the CsiA6 would have been to large for my liking
[ Parviz Dec 30, 2017 ]

great sound
[ philip Dec 26, 2017 ]

5 star rated, polymer cone woofers
[ Diane Dec 23, 2017 ]

GOOD REVIEWS - MATCHED OTHER SPEAKERS
[ JOHN Dec 22, 2017 ]

Compact size, good reviews
[ X Dec 16, 2017 ]

Great name Polk. And am expecting great listening, according to others reviews and specs.
[ Sherry Dec 15, 2017 ]

The reviews here were really helpful, so thanks to everyone that posted one. I just picked up some in-ceiling Polk Audio speakers and thought this would be a good center channel to replace a smaller, budget Yamaha center. I'm looking forward to getting this installed and giving it a listen!
[ Thomas Sep 18, 2017 ]

Superb center channel for a medium space!
[ David Mar 09, 2017 ]

I love Polk Audio great speakers
[ Steven Dec 24, 2016 ]

For the price, there is no better sound then Polk speakers
[ Kenneth B. Dec 03, 2016 ]

It was Black, matched with the front floor speakers that I bought. Why to you ask?
[ Gary Sep 26, 2016 ]

Needed a quality center channel speaker to pair with my other Polk speakers. This item fit the bill and sounds fantastic in my Living Room.
[ ROBERT Jul 01, 2016 ]

yes
[ GARY Jun 23, 2016 ]

JUST LIKE POLK SPEAKERS
[ robert May 11, 2016 ]

Have been a fan of Polk Audio speakers for over 30 years. Needed a new center channel speaker for my 7.2 surround system and the CSi A4 is matched to my Rti front tower speakers.
[ ANTHONY May 02, 2016 ]

I have other Polk speakers and this one is designed to work with the other ones.
[ ANDRES Feb 20, 2016 ]

I recently purchased the RTI series tower and bookshelf speakers and these supposed to be voiced matched to them.
[ Benedicta Feb 06, 2016 ]

Size and brand and price.
[ suren Jan 24, 2016 ]

Needed a center speaker for the movie room
[ Elizabeth Dec 29, 2015 ]

It has the power I was looking for for my surround system..and the price was right.
[ CURTIS Dec 25, 2015 ]

We've had an A4 center speaker for 5 years. Recently our Son in Law was shopping for one, so we mentioned how happy we are with our Polk A4. He listened to several speakers, and ultimately chose the A4. We decided to give it to him and our daughter for a Christmas gift. Ho-ho-ho!
[ GERALD G Dec 09, 2015 ]

To match my RTi A7's. The reviews were great.
[ Guest Nov 08, 2018 ]

Better sound
[ jim Oct 12, 2018 ]

Add sound
[ Jeffrey Jul 07, 2018 ]

It matches my bookshelf speakers.
[ Adam Jul 06, 2018 ]

I wanted something to match my polk RTi-A9's that would fit in my tv stand. The CSi A6 showed to big to fit in my space. The CSi A4 showed it would fit better and the ratings were all great. So i pulled the trigger.
[ KEVIN Jul 02, 2018 ]

Additional or surround sound
[ Jeffrey Jun 30, 2018 ]

price
[ Brian May 27, 2018 ]

I think it would blend better with the Cherry RTi 7 that I already have and the CSi 100 Cherry I recently bought from CRUTCHFIELD .Hopefully it would harmonize not only in visually but also in sound.
[ RICARDO N May 07, 2018 ]

We just purchased a 7.2 receiver, and I wanted to enhance the sound. Also, our front speakers are Polk Audio cherry speakers which match this item tonally.
[ Peter Mar 02, 2018 ]

I have some other Polk Speakers which I like and I needed a replacement center channel speaker for my system.
[ DAVID Dec 22, 2017 ]

four star rating is why I choose this.
[ Jim Dec 15, 2017 ]

Needed to replace 1994 Infinity Center Channel that had finally rotted out the surrounds. It stills sounds fine even at high levels, but I want to try out this polk cc. Know I will get better sound considering the newer technology.
[ Mark W. Dec 10, 2017 ]

Supposed to work well with my choice of the Polk RTi A9 front speakers
[ Yossi Nov 24, 2017 ]

To replace an old speaker and to match up to my Polk A7s
[ Terry Parker Nov 14, 2017 ]

I have the matching set at home and haven't purchased the center channel for the last 5 yrs. It finally went on sale and I grabbed my last speaker of the system from the only place I ever buy electronics from...Crutchfield.
[ E Oct 18, 2017 ]

I had bought the Polk RTi A3 speakers last week and came back to buy a home theater receiver and Rachel the sales rep also suggested this center channel speaker that matched what I had already bought. The price was great so I went for it!
[ MICHAEL Oct 14, 2017 ]

Size and weight that would fit on the mount on top of my plasma tv. I also own a set of RTi A1, they have nice sound and are built solid. Polk audio has good build quality for the cost.
[ Scott Oct 26, 2016 ]

Yes it is a direct match for the RTi speakers
[ Jonathan Apr 25, 2018 ]

Sorry, I looked at the RTiA7, but I don't know a definitive answer. These Polk center speakers are fairly large, so be sure the AF fits where you want to place it. IMHO, it WOULD be a good match. Clarity and sound is great. BP
[ Robert Apr 25, 2018 ]

Thanks for your question! For a more personalized recommendation tailored to your needs, preferences and budget, you would be best served contacting an Advisor directly by phone (888.955.6000) or online chat. They can help explain the differences between the Polk speakers in more detail and help you make a more well informed decision.
[ Larry Mar 14, 2018 ] Staff

You have asked an interesting question. So, I tuned my speaker on its end to learn how to answer your question. The best answer is no however, since I have several small items standing in front of my speaker more of the sound comes through into my room when it is standing on end. The sound projection is less restricted but only because my small objects are not in the way of the sound any longer.
[ GEORGE Oct 14, 2015 ]

It has two holes in back to mount to wall no specific brackets with speaker
[ MICHAEL Aug 16, 2014 ]

No, there is no wall mount option. You will need to install a shelf.
[ CYNTHIA Aug 16, 2014 ]

No, it doesn't.
[ TIAN Aug 16, 2014 ]

No, but it's an excellent center speaker.
[ Sheila Aug 16, 2014 ]

no
[ WILLIAM T Aug 15, 2014 ]

No, it us a shelf speaker. Don't know if they might have a wall mount for it but mine does not. I recommend the speaker.
[ GARY Aug 15, 2014 ]

No wall bracket, but the speaker lugs are offset and recessed so that you could attach one. If I was going to put it on a wall I would set it on a small, decorative shelf. Fortunately I have the tools with which to make one.
[ MAURICE Aug 15, 2014 ]

That shouldn't be an issue as the back is sealed.
Mines actually on a bottom shelf so I turned the speaker upside down to direct sound upward into the center of the room~
[ CHRISTOPHER C Feb 21, 2015 ]

It shouldn't really affect the sound. This is an enclosed speaker and it sounds and looks great.
[ ANTHONY J Feb 20, 2015 ]

Thanks for the quick reply!
[ Steve Feb 20, 2015 ]

Thanks Edward!
[ Steve Feb 20, 2015 ]

My A4 Cherry sits on my fire place mantle which is 12" deep and I have it all the way back against my stone wall. I am impressed with the sound that I get from this center channel. The sound will be directed straight toward the listening area.
[ RONALD Feb 20, 2015 ]

I also have a narrow shelf for this speaker. I don't believe you will have any problems. It's a great speaker for center channel.
[ LES Feb 20, 2015 ]

Absolutely, because the bass port is in the front and all the sounds are coming towards the listening area. This center channel speaker is awesome!
[ DORAN L Feb 20, 2015 ]

I feel placing the speaker in the back of the cabinet would degrade the sound quality. With the speaker placed just inside the opening,at the edge of the shelf you will be able to enjoy the quality of the Polk speaker.
That's just my opinion.
[ GENE Feb 20, 2015 ]

Yes, I am using this as a center channel Speaker mounted in a sliding drawer in my cabinet. It is approx 10" deep & just tall enough for the speaker. I am using it with a pair of Polk Audio Towers in the front & Mirage Speakers in the back. The sound is excellent & I am very happy with it.
[ EDWARD A Feb 20, 2015 ]

i believe so-mine is in a cabinet with only a few inches to spare and it sounds great
[ JUDD Feb 20, 2015 ]

It comes in a solid heavy box I think it would be fine , mine sits in a cabinet and it sounds great!
[ JAMES A Feb 20, 2015 ]